<h1>Parse 登录演示</h1>

<h2>
    <input type="text" [(ngModel)]="username">
</h2>
<h2>
    <input type="text" [(ngModel)]="password">
</h2>
<h2>
    <button (click)="signUp()">SignUp</button>
    <button (click)="logIn()">Login</button>
</h2>